Button for a window covering



FIG. 1 is a top perspective view of a button for a window coveringshowing our design in a position of use;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a left side view thereof, the right side view being a mirrorimage thereof.

The rear of the button cannot be seen when the button is in use. Thebroken lines in FIGS. 1-5 represent environmental structure that formsno part of the claimed design.

CLAIM The ornamental design for a button for a window covering, as shownand described.